The two main components of this manuscript are the lives of the house saints of St. Gall (Gallus, Otmar, Wiborada and Notker Balbulus) and of the apostles and early Christian saints and martyrs, and the Chronicle of the Abbey of St. Gall, from the Casus sancti Galli by Ratpert (612-883) to the Continuatio by Conradus de Fabaria (1204-1234). St. Gall reformer Vadian added marginal notes, some of them quite detailed and critical, to the text describing the history of the cloister. The codex also contains chronicalistic notes about St. Gall and Switzerland (14th/15th centuries), the Reise in das Heilige Land by Steffan Kapfman, and computistic, medical, astronomical and theological texts. On two previously empty pages (pp. 324-325) St. Gall abbey librarian Idelfons von Arx added four recipes for making faded handwriting legible. (sno)